InDesign hyperlink (link to page) not working once PDF

Hi everyone,

I am using InDesign CC 2017.1

I've successfully created a similar document with no issues but for some reason this time, I have issues. I've checked my last file and all appears to be set up the same. I have also been reading quite a few support files to see if I could find a solution... but no luck yet, so here goes.

1) I have created 'hyperlinks' in a document that are meant to act like buttons linking to a page within the document.

2) Once converted to PDF these links are not working, yet the hand curser is changing to indicate a link.

I have tried exporting it as a print PDF with hyperlinks selected. This was mentioned in other threads but has not worked for me.

Any clues anyone?

Thank you

Rebecca